{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{6}{c}}
\hline\hline
          &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         \\
\hline
1.S#1.T   &   -0.088\sym{**} &   -0.089\sym{**} &   -0.130\sym{***}&   -0.191\sym{**} &   -0.192\sym{**} &   -0.255\sym{**} \\
          &  (0.042)         &  (0.042)         &  (0.049)         &  (0.086)         &  (0.086)         &  (0.101)         \\
\hline
\(N\)     &    16314         &    16314         &    16314         &    16282         &    16282         &    16282         \\
\(R^{2}\) &    0.215         &    0.215         &    0.231         &    0.220         &    0.220         &    0.235         \\
\hline\hline
\end{tabular}
}
